Josef Pieper said this quote

Who among us has not suddenly looked into his child's face, in the midst of the toils and troubles of everyday life, and at that moment seen that everything which is good, is loved and lovable, loved by God! Such certainties all mean, at bottom, one and the same thing: that the world is plumb and sound; that everything comes to its appointed goal; that in spite of all appearances, underlying all things is - peace, salvation, gloria; that nothing and no one is lost; that God holds in his hand the beginning, middle, and end of all that is. Such nonrational, intuitive certainties of the divine base of all that is can be vouchsafed to our gaze even when it is turned toward the most insignificant-looking things, if only it is a gaze inspired by love. That, in the precise sense, is contemplation...Out of this kind of contemplation of the created world arise in never-ending wealth all true poetry and all real art, for it is the nature of poetry and art to be paean and praise heard above all the wails of lamentation. No one who is not capable of such contemplation can grasp poetry in a poetic fashion, that is to say, in the only meaningful fashion. The indispensability, the vital function of the arts in man's life, consists above all in this: that through them contemplation of the created world is kept alive and active.

~ Josef Pieper

Here we must take account of one of St. Thomas's conceptual distinctions, which at first seems like unnecessary caviling. It is the distinction between uncreated and created happiness. We have here something which, while not at all obvious, is nevertheless fraught with consequences for our whole feeling about life. Namely, this: what does indeed make us happy is the infinite and uncreated richness of God; but participation in this, happiness itself, is entirely a creatural reality governed from within by our humanity; it is not something that descends overwhelmingly upon us from outside. That is, it is not only something that happens to us; we ourselves are intensely active participants in our own happiness. Beatitude - Thomas is saying - cannot possibly be conceived as a merely objective condition of sheer existence. It is not a mere quality, not pure passivity, not simply a feeling. It is something that takes place in the alert core of the mind... Happiness is an act and an activity of the soul.

~ Josef Pieper

The common element in all the special forms of contemplation is the loving, yearning, affirming bent toward that happiness which is the same as God Himself, and which is the aim and purpose of all that happens in the world.

~ Josef Pieper

Happiness,... even the smallest happiness, is like a step out of Time, and the greatest happiness is sharing in Eternity.

~ Josef Pieper